发明名称 |
Process for producing cold rolled steel strip highly susceptible to conversion treatment. |
摘要 |
<p>A cold rolled steel strip having an excellent conversion coating property is produced by a process comprising:
<UnorderedLists id="ula01" listStyle="none"><ListItem>anodic electrolytically treating at least one non-plated surface of a cold rolled steel strip to form a layer of oxides thereon, and</ListItem><ListItem>cathodic electrolytically treating the above-mentioned surface to remove a portion ofthe oxide layer to an extent that the remaining portion of the oxide layer is in an amount corresponding to a quantity of electricity of from 0.05 to 4.0 millicoulomb/cm' which is necessary to completely remove the remaining portion of the oxide layer by means of a cathodic electrolytic treatment in an aqueous solution containing 19.06 g/l of borax and having a pH of 6.4 at a constant current density of 5 microampere/cm' and is in the form of a number of separate dots corresponding to a natural reduction time of from 1.0 to 200 seconds.</ListItem></UnorderedLists></p> |
申请公布号 |
EP0131960(A2) |
申请公布日期 |
1985.01.23 |
申请号 |
EP19840108436 |
申请日期 |
1984.07.17 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
ODASHIMA, HISAO NIPPON STEEL CORPORATION;SAITO, TAKAO NIPPON STEEL CORPORATION;HIRANO, YOSHIHIKO NIPPON STEEL CORPORATION |
分类号 |
C25D11/02;B21B1/22;B21B45/06;C23C22/78;C25D5/02;C25D5/26;C25D11/34;C25F1/00;C25F1/06;(IPC1-7):C25D11/34 |
主分类号 |
C25D11/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|